Threshing-machine.



PATBNTED JULY 17, 1906.

J; F. SGHUGH. 'THRESHING MACHINE.

APPLIOAT ION FILED MAY 24. 1904 I ru: NORRIS PETERS cm, wAsI-luvcmrv. n. c

UNITED STATES PATENT OFFICE. JOSEPH F. SCHUOH, OF ROUND GROVE, MINNESOTA.

THRESHlNG-MACHINE.

Specification of Letters Patent.

Application filed May 24, 1904:. Serial No. 209,5 92.

Patented July 17, 1906.

To all whom it may concern:

Be it known that LJosnrrr F. Sermon, a citizen of the United States, residing in the town of Round Grove, county of McLeod, and State of Minnesota, have invented cer tain new and useful Improvements in Threshing-Machines, of which the following is a specification. 4

My invention relates to improvements in that part of a combined threshing-machine and separator that separates by agitation the threshed grain from the straw and carries the straw from the thresher-cylinder rearward and out of the machine. That part of the combination is therefore known as the straw-carrier. The object of my invention is to locate the crank-shaft that drives the straw-carrier in a place in the machine where straw and chaff cannot get to it and to so connect the cranks with .the straw-carrier by a system of links and levers that the rotation of the crank shaft .will impart gyratory motion to the straw-carrier. I attain these objects by the mechanism illustrated in the accompanying drawings, in which Figure 1 is a longitudinal vertical section of the entire machine. Fig. 2 is a view showing the under side of the straw-carrier, certain features of its construction, and the manner of swinging it.

Similar letters refer to similar parts throughout both views.

' The parts shown in dotted lines illustrate the framework containing and supporting the working parts of the machine, and all parts of its mechanism as are older than this invention and well known to every builder and operator of threshing-machines are also shown in dotted lines. The parts shown in solid lines illustrate the improvements hereinafter described and claimed.

The straw-carrier illustrated in the accomanying drawings consists of two halves. Fach half of the straw-carrier consists of a set of longitudinal parallel carrier-bars F, and these bars F are carried by two transverse bars 0, arranged nearthe ends of bars F. Each half of the straw-carrier is a duplicate of the other half in construction and design, but not necessarily so in numbers of longitudinal bars F. The sets of bars F slightly incline toward the rear end of the machine, and their front ends are placed low enough and close enough to the concave and thresher part of the machine to allow the material hurled rearward by the action of the threshercylinder to drop on the upper surface of the sets of bars F.

Each parallel carrier-bar is constructed of three boards. Each of these boards is three inches wide and half an inch thick. Two of these boards are fastened to the sides of posts S, one on each side, but in a manner so as to have the posts project five-eighths of an inch above the edges of the two side boards. The third board is fastened flat on top of posts S. Blocks of wood, nine-eighths by three inches, three and five-eighths inches long, are also fastened between the two side boards at suitable distances apart and, like posts S, project five-eighths of an inch above them. These blocks furnish additional foundation for fastening the top board and materially increase the strength of the bar. This arrangement leaves two five-eighths-inch slits between the top board and side boards and allows the separated grain to drop down through. Posts S are of wood, two by three inches and nine and five-eighths inches high. This height of post, with side boards of the size, and fastened to the posts in the manner described, allows the bars F to describe a circle six inches in vertical diameter.

Posts S, supporting bars F, are set nine inches apart on transverse bars 0, measuring from center to center of top of posts S. As each of the bars F is only four inches wide, a half-inch space is left free between the intermeshing bars F. The notches shown on the upper side of bars F are for the bars to take hold of the straw and quickly pass it rearward out of the machine.

The sets of bars F have gyratory motion. They rise above the center of the circle which their movement describes and move rearward, then sink below the said center, and move forward again, &c. The mechanism, as explained hereinafter, is such that the bars of one set alternate with the bars of the other set-73. e., as one set moves forward the other moves rearward and as one set rises the other sinks. The straw is thereby under constant tossing and pitching carried rearward and the grain separated from the straw in its passage to the rear end and out of the machine.

The several bars of each set of bars F are held in position by and on the transverse bars 0 in the following manner: Each longitudinal bar F is mounted near its ends on two posts S and S. These posts are set upright on the horizontal bars 0 and securely fastened to said bars 0 by screw-bolts passing square through bars 0 and lengthwise through posts S.

From the above-described construction and arrangement of the straw-carrier mechcommunicating the motionof lever L to lever Z.

O and CU are links connecting crankCwith lever L and plate U.

1 n represents the pivots for plate U and levers L and Z, and P and P are rods connecting the sets of bars F with plate U.

The links h k h 7?, by which the bars 0, that carry the sets of bars F, are suspended, are pivoted to levers L and Z, one link on each side of each levers pivot, and to the ends of the transverse bars 0. Thus the sets of bars F rise and sink alternately and in unison with the rising and sinking of the ends of the rocking levers L and Z.

G' G G G are four rods guiding the sets of bars F. These rods, su plied with eyelets at both ends, are separate y fastened with eyebolts near one end of the transverse bars 0 to the side of the frame M and to the 0 pcsite ends of the transverse bars 0. T ese guide-rods are arranged in pairs between the transverse bars 0. This causes the swinging ends of the guide-rods, although the bars that swing them move in opposite direction to each other, to always be equally distant from the side of the frame M holding the rods, so that although the straw-carrier as a whole during the operation constantly plays from one side of the frame to the other the distance between the intermeshing bars of the two sets of carrier-bars F always remains the same.

The ends of transverse bars 0 terminate in pivots 1", which fit into eyelets at the lower ends of links 77/ and 721 provided for that purose.

p Crank C, carrying link CU, imparts vibratory motion t oplate U by link CU being pivoted to plate U at one side of the plate-pivot n of plate U, and plate U reciprocates the sets of bars F longitudinally in opposite phases by being connected with the sets of bars F by rods 1? and 1?, said rods being pivoted to plate U, one rod on each side of the pivot of plate U, and attached to the pivots r of the front transverse bars 0.

Link C is carried by crank C and pivoted,

to the lever L at one side of this levers pivot, and as the pivot by which link C is attached to lever L 1s located about one-quarter of a circle from the position of the pivot connecting link CU with plate U, considering. the

position of the crank-shaft O as the center of said circlethat is, as the line crossin the pivot-holes for links it and h C an the pivot n on lever L is a horizontal line and the line crossing the holes for the pivots of rods P, P, and'OU and the pivot n on plate U is a vertical line and as links CU and C form an angle of about ninety degrees and the crank-shaft O their point of meetingthe lines of their reciprocation are acted on alter nately by the rotation-of the crank, the sets of bars F arrive at the limit of their longitudinal movement at the moment they pass each other on the horizontal center line of the circle described by them in their movement, and gyratory motion is thus establi'shed.

What I claim as my invention, and desire to secure by'Let-ters Patent, is v 1. In a straw-carrier, a framework; two sets of parallel carrier-bars, each set carried by two transverse bars, the bars of one set alternating with the bars of the other set; links at the ends of each transverse bar; T- shaped levers pivoted to said framework and carrying the links and bars; said links pivoted to the levers one on each side of the leverpivots; a rod parallel with the carrier-bars connecting the T-shaped levers; means to reciprocate the sets of carrier-bars longitudinally in opposite phases; and means to rock the T-shaped levers whereby the sets of carrier-bars will be raised and lowered as they are reciprocated, substantially as described.

2. In a straw-carrier, a framework; two sets of parallel carrier-bars, each set carried by two transverse bars, the bars of one set alternating with the bars of the other set; links at the ends of each transverse bar; T- shaped levers ivoted to said framework and carrying the inks and bars; a rod parallel with the carrier-bars conneotin the T- shaped levers; a plate pivoted to t e framework, rods pivoted to the plate one on each side of the plate-pivot and connected with the sets of carrier-bars; a double crank-shaft carryin two links, one link pivoted to one of the T-s aped levers and the other pivoted to the plate ivoted to the framework, substantially as s own and described.

3. In a straw-carrier, a framework; two sets of parallel carrier-bars, each setcarried by two transverse bars, the bars of one set I, alternating with the bars of the other set; 1 links at the ends of each transverse bar; T-

shaped levers pivoted to said framework and carrying the l nks and bars; means to reci rocate the sets of carrier-bars longitudinally in opposite phases; rods fastened to the side of the framework near one end of the transverse bars and to the opposite ends of the transverse bars whereby the sets of parallel carrier-bars are guided and given a lateral motion when they are reciprocated, substan' tially as described.

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IIO

4. In a conveyer, rigid plates supported on edge close together to form a ta e, means uniting alternate plates to form two independent parallel sets, horizontally-tiltable rocker-arms and links connecting 0 posite ends of said rocker-arms, from whic links the alternate sets of plates are suspended, other sets of vertically disposed rocker-arms, connections between the ends of said rockerarms and the sets of plates, whereby one set of plates is lifted and advanced and the other set depressed and retracted.

5. A conveying ap aratus consisting of a table formed of parallel plates supported on edge close together, said plates united in alternate sets, and independently suspended by links at opposite ends of the table, oscillating means connecting with said links whereby one set of plates is raised and the other depressed, other oscillating means also connecting With the tables, and means whereby they are actuated in unison to reciprocate the two sets of plates in opposite directions during their periods of alternate depression.

JOSEPH F. SCHUCH. Witnesses:

J. A. LARSON, H. N Tnonson. 

